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i <br /> )l Sherwood <br /> 8071 NORTH LANDER AVENUE <br /> Labs PO BOX 937 <br /> C O R P O R A T I O N <br /> HILMAR, CALIFORNIA 95324 <br /> 1 <br /> 06/14/01 QUALITY CONTROL REPORT DHS Cert. 01400 <br />' Total Petroleum Hydrocarbons(TWO Analysis <br /> Client: GEO-PHASE ENVIR0NbEWAL Date Received: 06/08/01 <br /> 2937 VENEMW 4B240 Date started: 06/08/01 <br /> MODESTO, CA 95356 Date Complete: 06/13/01 <br /> ATTN: STEPHEN LANKF'ORD <br /> Lab Report 4: 1111060801 Lab Sample O:PH1060162-PH1060169 <br /> Linaariky Cheakr <br />' BTEX Benzene 0.9994 TPH Gasoline 0.9999 <br /> Toluene 0.9993 TPH Diesel N/A <br /> Ethyl Berea 0.9995 Motor Oil N/A <br />' Xylenes 0.9998 TRPH (418.1) N/A <br /> MTBE N/A <br />' std % Repeatability MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A 101 98 96 107 <br /> TPH Gasoline 108 TPH Diesel N/A <br /> TRPH (418.1.) N/A Motor Oil N/A <br /> Matrix spike Baooveries MS M.SD RPD <br /> MTBE N/A N/A N/A <br /> STFOL Benzene 105 102 2 <br />' Toluene 100 95 5 <br /> Ethyl Benz 103 96 7 <br /> xylenes 103 101. 2 <br />' TPH Gasoline 108 106 2 <br /> TPH Diesel N/A N/A N/A <br />' Method Blank MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A <.3 ug/L <.3 ug/L <.3 ug/L <.3 ug/L <br /> TPH Gasoline <50 ug/L Diesel/MD N/A TRPH(418.1) N/A <br /> 1 <br /> Lab Control Bade i Recovery EPA Performance Acceptance Range <br />' STEX Benzen 97 73.1 - 124 <br /> Toluene 102 73.6 120 <br /> Ethyl Bens 97 r 72.5 - 118 <br />' Xylenes 102 72.7 - 121 <br /> TRH Gasoline 110 82.4 117 <br /> TIM Diesel N/A -N/A N/A <br />' TRPH (418 ) N/A N/A <br /> a'a 6�tW4 <br /> 09)667-5258 FAX (209)667-2581 <br />